This document provides an introduction to Business Process Execution Language (BPEL). It discusses what BPM and SOA are and how BPEL fits into these approaches. BPEL allows processes to be defined using XML that can integrate multiple web services. Key components of BPEL include activities to receive, assign, invoke and reply to messages. The document also summarizes Oracle BPEL Process Manager, a tool for developing, deploying and managing BPEL processes.

1. Introduction to Business Process
Execution Language
Saunak Surani | LDRP-ITR

2. MFG Systems
 This presentation is an excerpt from one of MFG System Workshops.
 MFG is a Certified Oracle Partner.
 The following is a smaple of some of the MFG Workshops
- SOA (Oracle Service Oriented Architecture Suite)
- BPEL (Business Process Execution Language)
- OWB (Oracle Warehouse Builder)
- RAC (Real Application Cluster)
- Oracle Business Intelligence Discovere
- Portal

3. Business Process Management
 Before we get into BPEL let’s first discuss BPM
 BPM technology is a framework of applications that effectively tracks and orchestrates
business process.
 BPM solution automatically manage processes
 Extracting customer information from a database
 Add new customer transaction information
 Generate transaction in multiple related systems
 Support straight-though processing without human intervention when needed
 It also allows for manual intervention.

4. Business Process Management
 BPM allows you to automate tasks involving information from multiple systems
 With rules to define the sequence in which the tasks are performed as well as responsibilities
, conditions and other aspects of the process.
 BPM not only allows a business process to be executed more efficiently ,
 It also provides the tools to allow you to measure performance and identify opportunities for
improvement
 Easily make changes in processes to act upon those opportunities.

5. Service Oriented Architecture
 Service-Oriented Architecture (SOA) is :
 “A standards based implementation style whose goal is to achieve secure, reliable, and
interoperable loosely coupled interacting services.”

6. Web Services
 Web Services Description Language (WSDL)
 Describes the service begin provided
 Defines what the services does
 How to contact it
 Universal Description, Discovery and Integration (UDDI) protocol
 Like a Yellow book of Web Serivces

7. Web Services – Quality of Service
 Web Services - Coordination
 Proposed IT industry standard for how individual Web Services can interact in order to accomplish
an application task.
 The WS-Coordination interface defines a context within which coordination is to take place and
the specific items of data that are to be exchanged in order for transactions to complete
successfully as part of an overall business process defined in a Business Process Execution
Language (BPEL) program.
 WS-Transaction is a companion specification for what will constitute the completion of a
transaction.
 WS- Security
 WS- Reliable Messaging
 WS- Interoperability
 Open industry organization charted to promote Web Services interoperability

8. Business Process Execution Language
 Business Process Execution Language (BPEL) defines a notation for specifying
business process behavior based on Web Services.
 Business processes can be described in two ways :
 Executable business processes
 Business protocols

9. Business Process Execution Language
 BPEL is used to model the behavior of both executable and abstract processes.
 The scope includes :
 Sequencing of process activities , especially Web Service interactions.
 Correlation of messages and process instances
 Recovery behavior in case of failures and exceptional conditions.
 Bilateral Web Service based relationships between process roles

10. Business Process Execution Language
 BPEL (Business Process Execution Language) for Web services is an XML-based
language (BPEL4WS, usually shortened to BPEL, which rhymes with "people")
 designed to enable task-sharing for a distributed computing or grid computing environment .
 across multiple organizations.
 using a combination of Web services.
 Written by developers from BEA Systems, IBM, and Microsoft, BPEL combines and
replaces IBM's Web Services Flow Language (WSFL) and Microsoft's XLANG
specification.

11. XML Standards
 BPEL builds on and extends XML and Web Services specifications. BPEL is expressed
entirely in XML, uses and extends WSDL, and uses WSDL and XML Schema for the
data model ..
 WSDL
 XSD
 Namespaces

12. Business Process Execution Language
 Using BPEL, a programmer formally describes business process that will take place
across the Web in such a way that any cooperating entity can perform one or more
steps in the process the same way.
 In a supply chain process, for example, a BPEL program might describe a business
protocol that formalizes what pieces of information a product order consists of, and
what exceptions may have to be handled.
 The BPEL program would not, however, specify how a given Web service should
process a given order internally.

13. BPEL Servers
 Oracle BPEL Process Manager
 ActiveBPEL Engine (Open Source)
 IBM BPEL4WS Editor
 Microsoft BizTalk Server XLANG

14. Description of Basic BPEL Process

15. Description of Basic BPEL Process
 Requester invokes BPEL process by passing a message
 Receive operation copies received data into Variable 1
 Assign operation crates Variable 2 with data from Variable 1
 Invoke creates a service request from Variable 2
 Request sent to service by Invoke
 Response received by the Invoke
 Response message copied to Variable 3
 Assign creates Variable 4 from Variable 3
 Reply creates service reply from Variable 4
 Service response is sent by the Reply

16. Oracle BPEL Process Manager
 BPEL is emerging as the standard for assembling a set of discrete services into an end-to-
end process flow, radically reducing the cost and complexity of process integration
initiatives.
 Oracle BPEL Process Manager offers a comprehensive and easy-to-use infrastructure
for creating, deploying and managing BPEL business processes.
 A GUI developer tool integrated into JDeveloper

17. Oracle BPEL Process Manager Architecture

18. Oracle BPEL Process Manager Architecture
 Oracle BPEL Process Manager
 Manage BPEL processes
 Is Composed of the Designer, Process Manager & Console
 Oracle BPEL Process Designer
 Model, edit & design processes
 Integration Services
 Transformation & adapters
 Core BPEL engine
 Supports BPEL standard, runs on various application servers

19. Supported Adapters
 File Adapters
 FTP Adapters
 Oracle Advanced Queuing
 Database Adapter
 JMS Adapter
 Oracle Applications Adapter
 And more….

20. Data Transformation Services
 Built in transformer component
 Uses XSLT Mapper
 Xpath
 XSD
 XSL
 Test Tools

21. BPEL/SOA Methodology
 Web Services Architecture Usage Scenarios
 Scenario types
 Fire-and-Forget
 Request/Response (Callback)
 Code-First
 WSDL-First

22. BPEL Process
 Depends on exposed service
 Register Service
 Invoke process flow
 Data Transformation
 Exception processing
 User tasks
 Sensors
 Monitor

23. Oracle BPEL GUI